Son Heung-min is felled inside the box and Tottenham have the chance to win this!

It's the substitute Havard Nordtveit who gave away the penalty, catching Son's boot as the Tottenham forward changed direction.

Trevor Brooking
Former West Ham and England midfielder on Radio 5 live

Spurs have plugged away and, just when you'd started to think they weren't going to get an equaliser, they have managed to find one.

Image source, Reuters

Another free-kick for Tottenham. This one is about 30 yards out and Spurs decide not to try and catch out the West Ham defence and instead just go for goal. Christian Eriksen hits it well enough, but it bounces wide.

Five minutes to go.

Trevor Brooking
Former West Ham and England midfielder on Radio 5 live

Walker and Rose are pushing further and further forward. If another spurs goal is going to come you suspect one of the two full-backs will be involved.

Image source, Reuters

Time to shore things up at the back as the clock ticks down. Defensive midfielder Havard Nordtveit is sent on for West Ham, replacing Dimitri Payet.

Harry Kane is fouled just outside the area. A chance from the free-kick here but Spurs take it quickly, too quickly it turns out as Dele Alli scuffs the ball into Darren Randolph's hands at his near post.

Dele Alli produces a couple of stepovers on the left but Antonio has the measure of him and blocks the cross. 

Ten minutes left, one goal in it. Tottenham facing the possibility of defeat for the first time this season.

Can they find an equaliser? They are pressing for one again now.

Image source, PA

Trevor Brooking
Former West Ham and England midfielder on Radio 5 live

The last 15 minutes anything could happen. You feel like there are going to be more goals. Spurs have to chase it and West Ham can hit on the break. Will the latter be punished for not taking chances like that one with Zaza?

This is unfamiliar territory for Tottenham. This is the first time they have conceded more than once in the Premier League.

Once again, gaps are being left at the back as they press for an equaliser. They escape as Pedro Obiang does some sort of weird back flick out of play - like pressing the wrong button on Fifa or PES (other football games are available... I think). Then, another West Ham break ends with Dimitri Payet delaying taking his shot too long when the gap was there to shoot.

Another change for Tottenham as Mauricio Pochettino turns to Son Heung-min to try and unlock the West Ham defence. He replaces Mousa Dembele.

Image source, Reuters

Tottenham's desperation to get back level quickly leaves them exposed to the counter as the Hammers break. Simone Zaza has the chance to get his first for the club but shoots wide.

Trevor Brooking
Former West Ham and England midfielder on Radio 5 live

He tugged his shirt and then pulled on his shoulder. Amazing really. West Ham haven't had a kick in the second half and have been on the rack. Then suddenly they have two corner kicks and get the penalty. If Tottenham hadn't waited until after the corner to make the substitution of Janssen they might not have conceded the penalty.

What was Vincent Janssen thinking? He surely didn't need to grapple Winston Reid like he did.

Even more frustrating for Mauricio Pochettino is that he was moments away from swapping Janssen for Dele Alli, but delayed the change until after the corner was taken.

The change is made now, but how Pochettino will wish he'd made it as originally planned.

Vincent Janssen wrestles Winston Reid to the ground as they challenge for a cross and West Ham have a penalty...

Image source, Reuters

Danny Rose goes in the referee's book for a foul on Antonio. 

Moments later, the situation is reversed as Antonio brings down Rose, earning the West Ham winger a yellow card.

Meanwhile, Dele Alli is about to come on...